Why the study?
Does the heart rate/ST slope accurately predict the severity of coronary artery stenosis in patients evaluated for possible coronary artery disease?
Does the heart rate/ST slope accurately predict the severity of coronary artery stenosis in patients evaluated for possible coronary artery disease?
The heart rate/ST slope fails to accurately predict the extent of coronary artery disease, challenging previously published diagnostic ranges.
The heart rate/ST slope should not guide stenosis severity assessment; challenges prior diagnostic ranges but remains hypothesis-generating.
The heart rate/ST slope was evaluated in 49 patients undergoing routine investigation for possible coronary artery disease. The slope correctly predicted the absence of any 75% stenoses in the seven patients to whom this applied; it was, however, correct for only four of 30 with one stenosis, one of 10 with two, and neither of the patients with three. Distinct slope ranges were not found, and the previously published ranges said to be specific for no significant stenosis and one, two, and three vessel disease were not.
No takes yet. Share an insight, caveat, or question.
Balcon et al. (1984) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: